Earthquake with magnitude of Md 2.0 on date 04-09-2004 and time 12:16:56 (UTC) in region 3 km S Predappio (FC)

A magnitude Md 2.0 earthquake occured in region: 3 km S Predappio (FC), on

  • 04-09-2004 12:16:56 (UTC)
  • 04-09-2004 14:16:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 44.0800, 11.9830 at 23 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Predappio FC 3 6346 6346
Meldola FC 8 9970 16316
Civitella di Romagna FC 9 3786 20102
Dovadola FC 9 1653 21755
Galeata FC 11 2516 24271
Castrocaro Terme e Terra del Sole FC 11 6426 30697
Rocca San Casciano FC 11 1910 32607
Bertinoro FC 14 11059 43666
Santa Sofia FC 16 4136 47802
Forlì FC 17 117913 165715
Forlimpopoli FC 17 13290 179005
Portico e San Benedetto FC 17 756 179761
Modigliana FC 17 4560 184321
Tredozio FC 19 1212 185533

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km S of Forlì (117913 inhabitants)
22 Km W of Cesena (96758 inhabitants)
24 Km SE of Faenza (58541 inhabitants)
37 Km SE of Imola (69797 inhabitants)
41 Km SW of Ravenna (159116 inhabitants)
47 Km W of Rimini (147750 inhabitants)
68 Km NE of Firenze (382808 inhabitants)
69 Km N of Arezzo (99543 inhabitants)
69 Km SE of Bologna (386663 inhabitants)
73 Km E of Scandicci (50609 inhabitants)
74 Km E of Prato (191150 inhabitants)
77 Km W of Pesaro (94582 inhabitants)
87 Km E of Pistoia (90315 inhabitants)
87 Km W of Fano (60888 inhabitants)
89 Km SE of Ferrara (133155 inhabitants)
99 Km NE of Siena (53903 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 2.0 2004-09-04
12:16:56
44.08 11.983 23 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 504479
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2004-09-04 12:16:56 ± 0.209
Latitude 44.0800 ± 0.0107
Longitude 11.9830 ± 0.0142
Depth (km) 23 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 504479

Uncertainty

Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1639.5
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 293
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00178
Epicentral distance of station farthest from the epicenter (degree) 0.00413
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 504479
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 01:02:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.CRE.Z. 2004-09-04T12:17:13.75 10.0 undecidable manual SG 182 0.4551 0.07 0.6
--.VMG.Z. 2004-09-04T12:17:10.90 10.0 undecidable manual SG 249 0.333 0.05 0.7
--.PGD.Z. 2004-09-04T12:17:08.12 10.0 undecidable manual SG 222 0.2664 -0.26 0.1
--.SFI.Z. 2004-09-04T12:17:06.63 10.0 undecidable manual SG 208 0.1998 0.21 0.1
--.CRE.Z. 2004-09-04T12:17:06.39 10.0 undecidable manual PG 182 0.4551 0.04 1.7
--.VMG.Z. 2004-09-04T12:17:04.32 10.0 undecidable manual PG 249 0.333 0.08 1.5
--.PGD.Z. 2004-09-04T12:17:03.18 10.0 undecidable manual PG 222 0.2664 -0.11 1.5
--.SFI.Z. 2004-09-04T12:17:02.80 10.0 undecidable manual PG 208 0.1998 -0.08 1.8
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download